Fabric-frame of embroidering-machines.



K. KELLER.

FABRIC FRAME 0F EMBROIDERING MACHINES.

APPLICATION FILED JUNE 11, 1912.

1,074,870. Patented 0011.7,1913.

%ZJMJI6J: Invenior;

WWW/M .ximbw 1 UNHED STATES PATENT QOFF1E KARL KELLER, OF ARBON, SWITZERLAND, ASSIGNOE TO THE FIRM". OF ADOLPH SAURER, OF ARBON, SWITZERLAND.

FABRIC-FRAME 013 EMBROIDERING-MACHINES.

Specification of Letters Patent.

Patented Got. *7, 1913.

Application filed June 11, 1912. Serial No. 703,035.

1 b all whom it may concern Be it known that I, KARL KELLER, a citizen of the Republic of Switzerland, residing Arbon, Switzerland, have invented new and useful Improvements in the Fabric- Frames of Embroidering-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The present invention rel-ates to an im proved manner of mounting the fabric-rollers in the fabricframes of embroidering machines. According to this invention each fabric-roller is supported by two levers, and at each side the two levers of two 005perating rollers are fulcrumed, either on a common pivot, or each on a separate pivot, in such manner that the strains in the rollers are taken up by the pivots, through the agency of the levers, and thus the frame itself relieved from these strains and distortion of the same prevented.

The invention is illustrated in the accompanying drawing, in which- Figure 1 is an elevation, showing a portion of a fabric-frame, with fabric-rollers mount-ed according to this invention. Fig. 2 is a vertical sectional view, showing a fragment of Fig. 1. Fig. 3 shows, on a larger scale, a detail to be hereinafter re ferred to. Figs. 4 and 5 are fragmental views illustrating in elevation and vertical section respectively a modification of the tructure shown in Figs. 1 and 2. Fig. 6 shows, on an enlarged scale, a detail of Figs. 4c and 5 which will be further described.

The fabric-rollers 2 are mounted in the fabric-frame 1, the gudgeons of each roller being supported in the ends of two levers 'In the construction illustrated in Figs. 13, at each side the two levers 3 of two cooperating rollers are fulcrumed in the manner of a hinge on a common pivot 4, projecting from a plate 5 secured to the fabricframe. The levers 3 may be retained upon the pivot 1 in any suitable manner, for instance by means of a washer and split-pin. In order that the levers may be fixed in their normal position on the frame, each lever is provided with a tapped lug 8 (Fig. 5), through which there passes a screwspindle 6, furnished with a hand-wheel at one end, while the opposite end presents an annular groove-and enters a plate 7, fastened to the fabric-frame 1. Into the plate 7 there passes a screw 8, whose end is received by the groove in the spindle 6, which. though it can be turned freely is thus prevented from shifting axially.

In the modification illustrated in Figs. -fl6, at each side of the frame each of the two levers 8 of two cooperating fabric-rollers is fulcrumed on a separate pivot 9, both pivots however projecting from a common plate 5. In order that the two levers 3 may be fixed in a position corresponding in lirection with that of the frame 1, a screwpin 10 is jointed to the extremity of each lever. These screw-pins 10 protrude through slotted plates 11, fastened to the frame 1, and over their ends are screwed the nuts 12, having the form of hand-wheels (Fig. 6).

In both structures described the levers 3, after loosening the screws 8, or removing the hand-wheels12, respectively, can, together with the rollers 2, be swung out of the plane of the fabric-frame, such as is extremely desirable when fabric is to be placed upon or removed from the rollers. When the fabric has been placed upon the rollers 2 and the levers 3 with these rollers again swung up to the frame, and the screws 8 adjusted, or the nuts 12 screwed on, then by turning the spindles 6, or the handwhecls 12, the levers 3, with the fabricrollers, can be brought into a position corre sponding in direction with that of the frame, and thus the pieces of fabric between the rollers stretched. Or the pieces of fabric may be stretched, when the levers 3 are in their fixed position, by rotating the rollers, backward motion being prevented by the provision of suitable pawls and 'ratchets or the like of any well-known description.

In each case the strains in the fabric-rollers will not be taken up by the fabric-frame itself, but by the pivots 4 or 9, through the agency of the levers 3, so that the fabricframe is relieved of the strains and its distortion thus obviated.

It will be understood that the means illustrated for fixing the levers 3 in their inward position are only described by way of example, as any appropriate devices may be employed.

' I claim: H

1. In an embroidering machine, a movable vertical fabric-frame, a pair of fabricrollers arranged in said frame vertically one above another, and a pair of pivotal levers located at each side of the frame and fulcrumed thereon at their contiguous ends While their opposite ends support said rollers, substantially as and for the purposes set forth.

2. In an embroidering machine, in combination, a fabric-frame, a pair of fabric rollers, a pair of pivotal levers located at each side of the frame and fulcrumed thereon at their contiguous ends, while their opposite ends support the said rollers, and adjustable means for positioning the levers and fixing them in the working position, iiublstantially as and for the purposes speci- 3. In an embroidery machine, the combination with the movable fabric frame thereof; of a pair of fabric rollers, a pair of pivotal levers located at each side of the frame and fulcrumed thereon at their contiguous ends while their opposite ends support the said rollers, and hand screws for holding and adjusting the levers with their rollers in operative positions.

4. In an embroidery machine, the combination with the movable fabric frame thereof; of a pair of fabric rollers, a pair of levers located at each side of the frame, a pivot pin on the frame common to the contiguous ends of the levers of each pair, said rollers mounted in the opposite ends of the levers, and a screw and hand wheel at the roller end of each lever to adjust the tension.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

KARL KELLER. Witnesses: ERNsr FISCHER,

Ancnsr Runes.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

